640152242263 has 8 divisors (see below), whose sum is σ = 674053993520. Its totient is φ = 606271443840.

The previous prime is 640152242251. The next prime is 640152242281. The reversal of 640152242263 is 362242251046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 640152242263 - 2³³ = 631562307671 is a prime.

It is a super-2 number, since 2×640152242263² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640152242203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5175468 + ... + 5297713.

It is an arithmetic number, because the mean of its divisors is an integer number (84256749190).

Almost surely, 2^640152242263 is an apocalyptic number.

640152242263 is a deficient number, since it is larger than the sum of its proper divisors (33901751257).

640152242263 is a wasteful number, since it uses less digits than its factorization.

640152242263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10476417.

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 640152242263 in words is "six hundred forty billion, one hundred fifty-two million, two hundred forty-two thousand, two hundred sixty-three".